It's unknown how big of a role Ms. Marvel would play in the movie as there are at least five new characters with James Spader as Ultron, Elizabeth Olsen as Scarlet Witch, Aaron Taylor-Johnson as Quicksilver, Don Cheadle as Rhodey and Thomas Kretschmann as Baron von Strucker.

That's in addition to Robert Downey Jr. as Iron Man and Tony Stark, Chris Evans as Steve Rogers and Captain America, Chris Hemsworth as Thor, Scarlett Johansson as Black Widow, Mark Ruffalo as the Hulk and Jeremy Renner as Hawkeye.

Sadly, it doesn't look like Tom Hiddleston will show as Loki (maybe as Odin?).

It might also be worth mentioning that Carol Danvers is now known as Captain Marvel in the Marvel Comics, so Marvel Studios could go that route as well.

"The Avengers: Age Of Ultron" hits May 1, 2015 directed by Joss Whedon starring Robert Downey Jr., Chris Evans, Chris Hemsworth, Scarlett Johansson and Mark Ruffalo with James Spader as Ultron.